短語詞組短語polyphase power factor meter 多相功率因數(shù)表power factor meter group 功率因數(shù)測量儀組件Electronic Power Energy Meter 電子式電能表e power factor meter 三相功率因數(shù)表power density meter 功率密度計singlephase power factor meter 單相相位計power carrier meter 電力載波電表power remote meter reading 電力遠程抄表Mechanical Power Energy Meter 機械式電能表 返回 power meter